Service on a portion of three of Metro’s rail lines was suspended Thursday evening due to a smoke incident just a day before the transit agency is expected to announce a major overhaul of the system in the wake of a fatal smoke incident at L’Enfant Plaza that killed one person and injured 86 others last year.

Metro service on the Orange, Blue and Silver lines was temporarily suspended between Eastern Market and L’Enfant Plaza, and D.C. firefighters are on the scene.

Capitol South and Eastern Market stations are closed. Metrobus shuttle service will operate between the two stations.

Metro officials said riders should consider alternate travel options and expect significant delays on the Silver, Orange and Blue lines.